CVE-2026-100675

MEDIUM 6.5

stoatchat before 0.15.5 Denial of Service via mass mentions

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

stoatchat versions before 0.15.5 contain a denial of service vulnerability in the acknowledgement worker that processes mass mention messages. Authenticated users can send five crafted role-mention messages to terminate all acknowledgement workers, disabling push notifications and mention badges deployment-wide until the API process restarts.

CWE	CWE-248
Vendor	stoatchat
Product	stoatchat
Published	Sep 26, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

stoatchat / stoatchat

0 < 0.15.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/stoatchat/stoatchat/security/advisories/GHSA-5gq6-v4cf-3qq8 vulncheck.com: https://www.vulncheck.com/advisories/stoatchat-before-0.15.5-denial-of-service-via-mass-mentions

Credits

🔍 QuentinRa